    function sexCheck(n) {
        choose1.style.cssText = "background-position:51px;";
        choose2.style.cssText = "background-position:51px;";
        if (n == 1) {
            choose2.style.cssText = "background-position:0px;";
        } else {
            choose1.style.cssText = "background-position:0px;";
        }
    }

    function volchange() {
        var au = document.getElementById("music");
        var vb = document.getElementById("volbtn");
        if (au.paused == true) {
            au.play();
            vb.style.cssText = "position:fixed; z-index:99; left:40px; top:40px; background-image:url(images/voicechange.png); width:76px; height:60px; background-position:76px;"
        } else {
            au.pause();
            vb.style.cssText = "position:fixed; z-index:99; left:40px; top:40px; background-image:url(images/voicechange.png); width:76px; height:60px;";
        }
    }